From ICT4D Wiki
http://www.upu.int/pls/ap/ssp_report.main?p_language=AN&p_choice=BROWSE
Data about postal services worldwide.
Ismael Peña-López, professor i investigador
Societat de la Informació, Divisòria Digital, TIC i Desenvolupament
http://www.upu.int/pls/ap/ssp_report.main?p_language=AN&p_choice=BROWSE
Data about postal services worldwide.